The controller determines whether the vehicle is in a shuttle motion from the operating position of the forward/reverse travel operating member and the actual traveling direction of the vehicle. The controller determines a target braking force when the vehicle is in the shuttle motion. The controller determines at least one of a target displacement of the travel pump and a target displacement of the travel motor based on the target braking force.

A hydraulic pressure control method for a transmission includes determining whether a current shift range is among a plurality of shift ranges, setting a dither frequency of a pressure control solenoid valve of a hydraulic circuit for the transmission to a predetermined first frequency when the current shift range is a predetermined first range, and setting the dither frequency of the pressure control solenoid valve to a predetermined second frequency when the current shift range is a shift range other than the first range.

An apparatus and a method for controlling shifting of a vehicle are provided. The apparatus includes a transmission configured to transmit power generated from by a motor to a vehicle wheel, and a controller configured to control an operation of the transmission. The controller is configured to enter a LURCH control mode when sensing shifting of a shift lever between a D range and an R range during driving to maintain a clutch torque in the transmission, to decrease a vehicle speed by controlling a motor speed, and to shift a gear of the vehicle by changing a motor torque when the vehicle speed reaches a threshold speed.

A control system operates a power train of a work vehicle. The system includes a transmission arrangement which transfers power from an engine to an output shaft of the vehicle to drive the vehicle in a first or second direction according to at least one forward or reverse modes. The arrangement includes a forward directional clutch and a reverse directional clutch, and a controller. The controller is configured to determine if one of the clutches is engaged; evaluate a speed of the engine; and provide a torque command to engage the other of the clutches to slow the speed of the engine when a shuttle shift is initiated, or when the speed of the engine exceeds a predetermined speed threshold.

An apparatus and a method for controlling shifting of a vehicle are provided. The apparatus includes a transmission configured to transmit power generated from by a motor to a vehicle wheel, and a controller configured to control an operation of the transmission. The controller is configured to enter a LURCH control mode when sensing shifting of a shift lever between a D range and an R range during driving to maintain a clutch torque in the transmission, to decrease a vehicle speed by controlling a motor speed, and to shift a gear of the vehicle by changing a motor torque when the vehicle speed reaches a threshold speed.

A method of controlling a gear shifting in a neutral gear stage for shortening a gear shifting time in the neutral gear stage when performing a gear shifting of a hybrid electric vehicle is characterized in that when a shift class of the gear shifting is determined, a hybrid control unit of the vehicle determines a shift gear ratio in the N-stage in a current state by use of a transmission (TM) output speed and a transmission (TM) input speed at a class transition time point, determines an N-stage gear shifting progressing rate by use of the determined N-stage shift gear ratio, sets time points of a start and an end of the gear shifting based on the determined gear shifting progressing rate, and controls the gear shifting speed in the N-stage with reference to a gear shifting target speed and the transmission input speed in a section of the time points of the start and the end of the speed control.

A method of controlling a gear shifting in a neutral gear stage for shortening a gear shifting time in the neutral gear stage when performing a gear shifting of a hybrid electric vehicle is characterized in that when a shift class of the gear shifting is determined, a hybrid control unit of the vehicle determines a shift gear ratio in the N-stage in a current state by use of a transmission (TM) output speed and a transmission (TM) input speed at a class transition time point, determines an N-stage gear shifting progressing rate by use of the determined N-stage shift gear ratio, sets time points of a start and an end of the gear shifting based on the determined gear shifting progressing rate, and controls the gear shifting speed in the N-stage with reference to a gear shifting target speed and the transmission input speed in a section of the time points of the start and the end of the speed control.

A hydraulic control device and hydraulic control method of a transmission are provided. The hydraulic control device of a transmission, which includes a forward clutch engaged in a Drive range, a reverse brake engaged in a Reverse range, and a switching valve that is able to selectively switch supply of a hydraulic pressure to the forward clutch and the reverse brake, wherein the hydraulic control device receives a shift position of a vehicle on which the transmission is mounted and idling stop information. When the range is switched to the Reverse range from the Drive range during idling stop, and the switching valve is positioned at a position at which a hydraulic pressure is able to be supplied to the reverse brake, rotational speed increase control with a rotational speed of an electric oil pump higher than a normal rotational speed is performed.

The present disclosure discloses a sensing system for sensing a position of a gear shaft. In the present disclosure, a magnet apparatus is provided on the gear shaft, where the magnet apparatus includes, along a rectilinear motion direction, a first length region magnet and a second length region magnet, the second length region magnet including a first portion and a second portion, a magnetic field of the second portion of the second length region magnet corresponding to a reverse gear position being different from that of the first length region magnet and that of the first portion of the second length region magnet. An actually induced electrical signal generated by sensing the motion of the magnet apparatus is different from a reference inductive electrical signal of a corresponding position of a reference magnet. The processing unit compares the inductive electrical signal generated by sensing the motion of the magnet apparatus against a simulated inductive electrical signal and determines whether the gear shaft is at a reverse gear position or a forward gear position based on a difference from the comparison.

A control system operates a power train of a work vehicle. The system includes a transmission arrangement which transfers power from an engine to an output shaft of the vehicle to drive the vehicle in a first or second direction according to at least one forward or reverse modes. The arrangement includes a forward directional clutch and a reverse directional clutch, and a controller. The controller is configured to determine if one of the clutches is engaged; evaluate a speed of the engine; and provide a torque command to engage the other of the clutches to slow the speed of the engine when a shuttle shift is initiated, or when the speed of the engine exceeds a predetermined speed threshold.